Her eyes dart over the results. "Wait a minute," she says.
"According to this, it can't be a virus, or a chemical. Because the
mouse tested with F0A didn't get sick." Her eyes travel down the page.
"And it can't be a fungus. They're larger than 10 microns, but the F100A
mouse didn't get sick either. It was the F5A mouse that got sick. It's
bacteria," she concludes finally.

Thrusting the clipboard back at you, Fran turns on her
heel and marches outside. You hear her talking to someone, then a motor
scooter starts up and putt-putts away.

Fran comes back in holding a box. "I've sent word back
to the hospital," she says, "that it's bacteria. Meanwhile, we have
another problem."